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Cisco Exam 642-889

Implementing Cisco Service Provider Next-Generation Egde

Network Services

Version: 7.0

[ Total Questions: 126 ]

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When implementing EoMPLS PWs, which configuration is optional? A. matching PW ID on both ends B. Xconnect C. Cisco Express Forwarding D.

Answer: D

Question No : 1

Question No : 2

2

On PE7, how many multiprotocol IBGP routes are learned from PE8 and what is the next-hop IP address? (Choose two.) A. 1 B. 2 C. 3 D. 10.8.1.1 E. 172.16.8.1 F. 192.168.108.81

Answer: B,E

Explanation:

Show ip bgp vpnv4 all --- i tag field is the answer

Which method is used to provide inter-AS AToM services? A. B. targeted LDP

Question No : 3

4

C. pseudowire stitching D. AToM interworking E. F. autodiscovery

Answer: C

Explanation:

http://www.cisco.com/en/US/docs/optical/cpt/r9_3/configuration/guide/cpt93_configuration_

chapter_0111.html

5

When using H-VPLS, the PE router may use an IRB interface. How many VLAN tags canbe processed by an IRB? A. 0 B. 1 C. 2 D. 3

Answer: A

A service provider wants to scale MAC address advertisements in its next generation E-LAN and E-TREE designs. Which technology can be used in the service provider cloud toreach this goal? A. PBB EVPN B. VPLS C. 802.1Q D.

Answer: A

When implementing MPLS Layer 3 VPNs with customers running OSPF as the CE-PErouting protocol, which situation will require a sham link to be implemented in the MPLS

A. B.

Question No : 4

Question No : 5

Question No : 6

6

C. to prevent OSPF routing loops when a customer site has redundant CE-PE connections D. if there is a backdoor link between the CE routers, to ensure that the backdoor link isused only to back up the primary connection through the MPLS VPN

Answer: D

Explanation:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t8/feature/guide/ospfshmk.html

Which option is a valid Cisco IOS XR BGP Layer 3 IPv4 MPLS VPN configuration? A. router bgp 65001 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 1.2.3.4 remote-as 65001 neighbor 1.2.3.4 update-source Loopback0 address-family vpnv4 neighbor 1.2.3.4 activate neighbor 1.2.3.4 send-community extended exit-address-family address-family ipv4 vrf VPN redistribute ospf 100 B. router bgp 65001 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 1.2.3.4 remote-as 65001 neighbor 1.2.3.4 update-source Loopback0 address-family vpnv4 neighbor 1.2.3.4 activate exit-address-family address-family ipv4 vrf VPN redistribute ospf 100 C. router bgp 100 address-family vpnv4 unicast neighbor 2.2.2.2 remote-as 100 update-source Loopback0 address-family vpnv4 unicast ! vrf VPN_A

Question No : 7

7

address-family ipv4 unicast redistribute ospf 100 D. router bgp 100 address-family vpnv4 unicast neighbor 2.2.2.2 remote-as 100 update-source Loopback0 address-family ipv4 unicast ! vrf VPN_A

address-family ipv4 unicast redistribute ospf 100

Answer: C

Answer:

When configuring VPLS on the Cisco ASR 9000, which three configurations are requiredunder the l2vpn configuration mode? (Choose three.) A. bridge-group B. bridge-domain

Question No : 8 DRAG DROP

Question No : 9

8

C. xconnect D. vfi E. encapsulation

Answer: A,B,D

Question No : 10

9

On PE7, which three statements are correct regarding the MPLS VPN configurations usedto support the connectivity between the CE7 and CE8 sites? (Choose three.) A. B. The import and export RTs are 1:1 C. Interface GiO/0/0/0 is associated to the "default" VRF

10

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